Hello everyone,
I've noticed an anoying problem when I need to decrypt a file from Emacs
on Windows. The prompt asking my passphrase is two lines whereas on
Gnu/Linux it's only one.

I've tracked this bug down to the epg--start fuction and try the
attached patch from some time now without noticing anything wrong.

The step to reproduce the bug are below:
1) Start Emacs with: emacs -Q
2) Execute the following commands in scratch buffer
   #+BEGIN_SRC emacs-lisp
(require 'epg)
(setq epg-gpg-program "gpg2"
epa-pinentry-mode 'loopback)
;; open a gnupg encrypted file :
(find-file "~/.emacs.d/authinfo.gpg")
   #+END_SRC

The result vary between Emacs on Microsoft windows and on GNU/Linux.

On Microsoft Windows:
#+BEGIN_VERSE
Passphrase for 7F4B4084DFC4EBD2 Pierre Téchoueyres <pierre.techoueyres@free.fr>
:
#+END_VERSE
Note the cariage return before the colon.

On GNU/Linux:
#+BEGIN_VERSE
Passphrase for 7F4B4084DFC4EBD2 Pierre Téchoueyres <pierre.techoueyres@free.fr>:
#+END_VERSE